Gas insulated ring network Cabinet RMU

HRM6-12/24 SF6 common box gas insulated switchgear (hereinafter referred to as gas cabinet) adopts modular design, with its perfect unity of fixed and flexible expansion, in order to meet the requirements of end users or network nodes, and meet the needs of various distribution switches, box substations, cable branch boxes.

General:

The RMU has the characteristics of compact structure, safety and reliability, long life and maintenance-free.

Service Environment

Altitude: ≤2500 m
Ambient temperature: maximum temperature +45℃; Minimum temperature -40℃
Humidity: daily average humidity ≤95%; The average monthly humidity is less than 90%
Seismic capacity: seismic intensity does not exceed 8 degrees

Key Feature

Switchgear ground bus
Immersion test: Pressure of 0.3bars applied underwater /24 hours
Arc test: 25kA/1s with interrupter 16kA/s without interrupter

Technical Data

Name	Unit	C module	F module	V module		CB module
Name	Unit	Load switch	Combination apparatus	Vacuum switch	Isolation/earthing switch	Vacuum circuit breaker	Isolation/earthing switch
Rated voltage	kV	12/24	12/24	12/24	12/24	12/24	12/24
power frequency withstand voltage	kV	42/50	42/50	42/50	42/50	42/50	42/50
lightning impulse withstand voltage	kV	95/125	95/125	95/125	95/125	95/125	95/125
Rated current	A	630/630	Note 1	630/630		1250/6300
Rated transfer current	A		1750
Closed-loop breaking current	A	630/630
Cable charging breaking current	A	135/135
Rated active load breaking current	A	61.5/-
Ground fault breaking current	A	200/150
Cable when ground fault	A	115/87
The breaking current of a charge	A	115/87
Short-circuit breaking current	kA		Note 2	20/16		20/16
Closing capacity	kA	63/50	Note 2	50/40	50/40	63/50	63/50
Short-time withstand current 2 seconds	kA	25/-
Short-time withstand current 3 seconds	kA	-/20		20/16	20/16	31.5/25	31.5/25
Mechanical life	Times	500	3000	5000	5000	10000	5000